imx: Add variscite DART-6UL Evaluation Kit

Port for the DART-6UL Evaluation Kit SBC. Based on the variscite
DART-6UL iMX6ULL SoM.

CPU:   Freescale i.MX6ULL rev1.1 900 MHz (running at 396 MHz)
CPU:   Commercial temperature grade (0C to 95C) at 43C
Reset cause: POR
Model: Variscite DART-6UL Evaluation Kit
Board: Variscite DART-6UL Evaluation Kit
DRAM:  512 MiB
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
In:    serial@02020000
Out:   serial@02020000
Err:   serial@02020000
Net:   FEC0

Working:
 - Eth0
 - i2c
 - MMC/SD
 - eMMC
 - USB host
 - UART 1

Note: LCDIF porting needs DM_VIDEO
https://lists.denx.de/pipermail/u-boot/2019-April/365506.html

Signed-off-by: Parthiban Nallathambi <parthitce@gmail.com>

5 files changed, 314 insertions, 0 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index f58f8fb235..0fa1f46129 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1637,6 +1637,7 @@ source "board/tcl/sl50/Kconfig"
 source "board/ucRobotics/bubblegum_96/Kconfig"
 source "board/birdland/bav335x/Kconfig"
 source "board/toradex/colibri_pxa270/Kconfig"
+source "board/variscite/dart_6ul/Kconfig"
 source "board/vscom/baltos/Kconfig"
 source "board/woodburn/Kconfig"
 source "board/xilinx/Kconfig"
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index e1bf714980..08ae3aa46d 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -549,6 +549,7 @@ dtb-$(CONFIG_MX6UL) += \
 dtb-$(CONFIG_MX6ULL) += \
 	imx6ull-14x14-evk.dtb \
 	imx6ull-colibri.dtb \
+	imx6ull-dart-6ul.dtb
 
 dtb-$(CONFIG_ARCH_MX6) += \
 	imx6-colibri.dtb
diff --git a/arch/arm/dts/imx6ull-dart-6ul.dts b/arch/arm/dts/imx6ull-dart-6ul.dts
new file mode 100644
index 0000000000..4cab1a048b
--- /dev/null
+++ b/arch/arm/dts/imx6ull-dart-6ul.dts
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Parthiban Nallathambi <parthitce@gmail.com>
+ */
+
+/dts-v1/;
+
+#include "imx6ull.dtsi"
+#include "imx6ull-dart-6ul.dtsi"
+
+/ {
+	model = "Variscite DART-6UL Evaluation Kit";
+	compatible = "variscite,imx6ull-dart-6ul", "fsl,imx6ull";
+};
+
+&usdhc2 {
+	status = "okay";
+};
+
+&usbotg1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usb_otg1_id>;
+	dr_mode = "otg";
+	srp-disable;
+	hnp-disable;
+	adp-disable;
+	status = "okay";
+};
+
+&iomuxc {
+	pinctrl-names = "default";
+
+	pinctrl_usb_otg1_id: usbotg1idgrp {
+		fsl,pins = <
+			MX6UL_PAD_GPIO1_IO00__ANATOP_OTG1_ID    0x17059
+		>;
+	};
+
+};
diff --git a/arch/arm/dts/imx6ull-dart-6ul.dtsi b/arch/arm/dts/imx6ull-dart-6ul.dtsi
new file mode 100644
index 0000000000..e96669f493
--- /dev/null
+++ b/arch/arm/dts/imx6ull-dart-6ul.dtsi
@@ -0,0 +1,261 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2019 Parthiban Nallathambi <parthitce@gmail.com>
+ */
+
+/ {
+	model = "Variscite DART-6UL i.MX6 Ultra Low Lite SOM";
+	compatible = "variscite,imx6ull-dart-6ul", "fsl,imx6ull";
+
+	memory {
+		reg = <0x80000000 0x20000000>;
+	};
+
+	chosen {
+		stdout-path = &uart1;
+	};
+};
+
+&fec1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_enet1>;
+	phy-mode = "rmii";
+	phy-handle = <&ethphy0>;
+	status = "okay";
+
+	mdio1: mdio1 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ethphy0: ethernet-phy@1 {
+			reg = <1>;
+			micrel,led-mode = <1>;
+		};
+	};
+};
+
+&fec2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_enet2>;
+	phy-mode = "rmii";
+	phy-handle = <&ethphy1>;
+	status = "okay";
+
+	mdio2: mdio2 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ethphy1: ethernet-phy@2 {
+			reg = <2>;
+			micrel,led-mode = <1>;
+		};
+	};
+};
+
+&gpmi {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_gpmi_nand>;
+	nand-on-flash-bbt;
+	fsl,no-blockmark-swap;
+	status = "disabled";
+
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	partition@0 {
+		label = "uboot";
+		reg = <0x0 0x400000>;
+	};
+
+	partition@400000 {
+		label = "uboot-env";
+		reg = <0x400000 0x100000>;
+	};
+
+	partition@500000 {
+		label = "root";
+		reg = <0x500000 0x0>;
+	};
+};
+
+&i2c1 {
+	clock-frequency = <100000>;
+	pinctrl-names = "default", "gpio";
+	pinctrl-0 = <&pinctrl_i2c1>;
+	pinctrl-1 = <&pinctrl_i2c1_gpio>;
+	scl-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
+	sda-gpios = <&gpio1 29 GPIO_ACTIVE_HIGH>;
+	status = "okay";
+};
+
+&i2c2 {
+	clock-frequency = <100000>;
+	pinctrl-names = "default", "gpio";
+	pinctrl-0 = <&pinctrl_i2c2>;
+	pinctrl-1 = <&pinctrl_i2c2_gpio>;
+	scl-gpios = <&gpio1 30 GPIO_ACTIVE_HIGH>;
+	sda-gpios = <&gpio1 31 GPIO_ACTIVE_HIGH>;
+	status = "okay";
+
+	eeprom@50 {
+		compatible = "cat,24c32";
+		reg = <0x50>;
+	};
+};
+
+&pwm1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pwm1>;
+	#pwm-cells = <3>;
+	status = "okay";
+};
+
+&uart1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart1>;
+	status = "okay";
+};
+
+&usdhc1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usdhc1>;
+	cd-gpios = <&gpio1 19 GPIO_ACTIVE_LOW>;
+	bus-width = <0x4>;
+	no-1-8-v;
+	status = "okay";
+};
+
+&usdhc2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usdhc2>;
+	bus-width = <8>;
+	no-1-8-v;
+	non-removable;
+	keep-power-in-suspend;
+	status = "disabled";
+};
+
+&iomuxc {
+	pinctrl-names = "default";
+
+	pinctrl_enet1: enet1grp {
+		fsl,pins = <
+			MX6UL_PAD_GPIO1_IO06__ENET1_MDIO	0x1b0b0
+			MX6UL_PAD_GPIO1_IO07__ENET1_MDC		0X1b0b0
+			MX6UL_PAD_ENET1_RX_EN__ENET1_RX_EN	0x1b0b0
+			MX6UL_PAD_ENET1_RX_ER__ENET1_RX_ER	0x1b0b0
+			MX6UL_PAD_ENET1_RX_DATA0__ENET1_RDATA00	0x1b0b0
+			MX6UL_PAD_ENET1_RX_DATA1__ENET1_RDATA01	0x1b0b0
+			MX6UL_PAD_ENET1_TX_EN__ENET1_TX_EN	0x1b0b0
+			MX6UL_PAD_ENET1_TX_DATA0__ENET1_TDATA00	0x1b0b0
+			MX6UL_PAD_ENET1_TX_DATA1__ENET1_TDATA01	0x1b0b0
+			MX6UL_PAD_ENET1_TX_CLK__ENET1_REF_CLK1	0x4001b031
+		>;
+	};
+
+	pinctrl_enet2: enet2grp {
+		fsl,pins = <
+			MX6UL_PAD_GPIO1_IO06__ENET2_MDIO	0x1b0b0
+			MX6UL_PAD_GPIO1_IO07__ENET2_MDC		0X1b0b0
+			MX6UL_PAD_ENET2_RX_EN__ENET2_RX_EN	0x1b0b0
+			MX6UL_PAD_ENET2_RX_ER__ENET2_RX_ER	0x1b0b0
+			MX6UL_PAD_ENET2_RX_DATA0__ENET2_RDATA00	0x1b0b0
+			MX6UL_PAD_ENET2_RX_DATA1__ENET2_RDATA01	0x1b0b0
+			MX6UL_PAD_ENET2_TX_EN__ENET2_TX_EN	0x1b0b0
+			MX6UL_PAD_ENET2_TX_DATA0__ENET2_TDATA00	0x1b0b0
+			MX6UL_PAD_ENET2_TX_DATA1__ENET2_TDATA01	0x1b0b0
+			MX6UL_PAD_ENET2_TX_CLK__ENET2_REF_CLK2	0x4001b031
+		>;
+	};
+
+	pinctrl_gpmi_nand: gpminandgrp {
+		fsl,pins = <
+			MX6UL_PAD_NAND_DQS__RAWNAND_DQS		0x0b0b1
+			MX6UL_PAD_NAND_CLE__RAWNAND_CLE		0x0b0b1
+			MX6UL_PAD_NAND_ALE__RAWNAND_ALE		0x0b0b1
+			MX6UL_PAD_NAND_WP_B__RAWNAND_WP_B	0x0b0b1
+			MX6UL_PAD_NAND_READY_B__RAWNAND_READY_B	0x0b000
+			MX6UL_PAD_NAND_CE0_B__RAWNAND_CE0_B	0x0b0b1
+			MX6UL_PAD_NAND_CE1_B__RAWNAND_CE1_B	0x0b0b1
+			MX6UL_PAD_NAND_RE_B__RAWNAND_RE_B	0x0b0b1
+			MX6UL_PAD_NAND_WE_B__RAWNAND_WE_B	0x0b0b1
+			MX6UL_PAD_NAND_DATA00__RAWNAND_DATA00	0x0b0b1
+			MX6UL_PAD_NAND_DATA01__RAWNAND_DATA01	0x0b0b1
+			MX6UL_PAD_NAND_DATA02__RAWNAND_DATA02	0x0b0b1
+			MX6UL_PAD_NAND_DATA03__RAWNAND_DATA03	0x0b0b1
+			MX6UL_PAD_NAND_DATA04__RAWNAND_DATA04	0x0b0b1
+			MX6UL_PAD_NAND_DATA05__RAWNAND_DATA05	0x0b0b1
+			MX6UL_PAD_NAND_DATA06__RAWNAND_DATA06	0x0b0b1
+			MX6UL_PAD_NAND_DATA07__RAWNAND_DATA07	0x0b0b1
+		>;
+	};
+
+	pinctrl_i2c1: i2cgrp {
+		fsl,pins = <
+			MX6UL_PAD_UART4_TX_DATA__I2C1_SCL       0x4001b8b0
+			MX6UL_PAD_UART4_RX_DATA__I2C1_SDA       0x4001b8b0
+		>;
+	};
+
+	pinctrl_i2c1_gpio: i2c1grp_gpio {
+		fsl,pins = <
+			MX6UL_PAD_UART4_TX_DATA__GPIO1_IO28 0x1b8b0
+			MX6UL_PAD_UART4_RX_DATA__GPIO1_IO29 0x1b8b0
+		>;
+	};
+
+	pinctrl_i2c2: i2cgrp {
+		fsl,pins = <
+			MX6UL_PAD_UART5_TX_DATA__I2C2_SCL       0x4001b8b0
+			MX6UL_PAD_UART5_RX_DATA__I2C2_SDA       0x4001b8b0
+		>;
+	};
+
+	pinctrl_i2c2_gpio: i2c2grp_gpio {
+		fsl,pins = <
+			MX6UL_PAD_UART5_TX_DATA__GPIO1_IO30	0x1b8b0
+			MX6UL_PAD_UART5_RX_DATA__GPIO1_IO31	0x1b8b0
+		>;
+	};
+
+	pinctrl_pwm1: pwm1grp {
+		fsl,pins = <
+			MX6UL_PAD_LCD_DATA00__GPIO3_IO05	0x1b0b1
+		>;
+	};
+
+	pinctrl_uart1: uart1grp {
+		fsl,pins = <
+			MX6UL_PAD_UART1_TX_DATA__UART1_DCE_TX	0x1b0b1
+			MX6UL_PAD_UART1_RX_DATA__UART1_DCE_RX	0x1b0b1
+		>;
+	};
+
+	pinctrl_usdhc1: usdhc1grp {
+		fsl,pins = <
+			MX6UL_PAD_SD1_CMD__USDHC1_CMD		0x17059
+			MX6UL_PAD_SD1_CLK__USDHC1_CLK		0x10059
+			MX6UL_PAD_SD1_DATA0__USDHC1_DATA0	0x17059
+			MX6UL_PAD_SD1_DATA1__USDHC1_DATA1	0x17059
+			MX6UL_PAD_SD1_DATA2__USDHC1_DATA2	0x17059
+			MX6UL_PAD_SD1_DATA3__USDHC1_DATA3	0x17059
+			MX6UL_PAD_UART1_RTS_B__GPIO1_IO19	0x17059
+
+		>;
+	};
+
+	pinctrl_usdhc2: usdhc2grp {
+		fsl,pins = <
+			MX6UL_PAD_NAND_WE_B__USDHC2_CMD		0x170f9
+			MX6UL_PAD_NAND_RE_B__USDHC2_CLK		0x100f9
+			MX6UL_PAD_NAND_DATA00__USDHC2_DATA0	0x170f9
+			MX6UL_PAD_NAND_DATA01__USDHC2_DATA1	0x170f9
+			MX6UL_PAD_NAND_DATA02__USDHC2_DATA2	0x170f9
+			MX6UL_PAD_NAND_DATA03__USDHC2_DATA3	0x170f9
+			MX6UL_PAD_NAND_DATA04__USDHC2_DATA4	0x170f9
+			MX6UL_PAD_NAND_DATA05__USDHC2_DATA5	0x170f9
+			MX6UL_PAD_NAND_DATA06__USDHC2_DATA6	0x170f9
+			MX6UL_PAD_NAND_DATA07__USDHC2_DATA7	0x170f9
+		>;
+	};
+};
diff --git a/arch/arm/mach-imx/mx6/Kconfig b/arch/arm/mach-imx/mx6/Kconfig
index e782859b1e..f513c4c06f 100644
--- a/arch/arm/mach-imx/mx6/Kconfig
+++ b/arch/arm/mach-imx/mx6/Kconfig
@@ -161,6 +161,18 @@ config TARGET_COLIBRI_IMX6ULL
 	select DM_THERMAL
 	select MX6ULL
 
+config TARGET_DART_6UL
+	bool "Variscite imx6ULL dart(DART-SOM-6ULL)"
+	select MX6ULL
+	select DM
+	select DM_ETH
+	select DM_GPIO
+	select DM_I2C
+	select DM_MMC
+	select DM_SERIAL
+	select DM_THERMAL
+	select SUPPORT_SPL
+
 config TARGET_DHCOMIMX6
 	bool "dh_imx6"
 	select BOARD_EARLY_INIT_F